EP 2936587 B1 20170816 - NEGATIVE ELECTRODE MATERIAL FOR A RECHARGEABLE BATTERY, AND METHOD FOR PRODUCING IT
Title (en)
NEGATIVE ELECTRODE MATERIAL FOR A RECHARGEABLE BATTERY, AND METHOD FOR PRODUCING IT
Title (de)
NEGATIVES ELEKTRODENMATERIAL FÜR EINE WIEDERAUFLADBARE BATTERIE UND HERSTELLUNGSVERFAHREN DAFÜR
Title (fr)
MATÉRIAU D'ÉLECTRODE NÉGATIVE POUR UNE BATTERIE RECHARGEABLE ET PROCÉDÉ POUR SA FABRICATION
Publication
Application
Priority
- EP 12198559 A 20121220
- EP 2013076851 W 20131217
- EP 13805902 A 20131217
Abstract (en)
[origin: WO2014095823A1] The invention relates to a negative electrode powder for a lithium-ion rechargeable battery comprising a mixture comprising carbon and SiOx, with 0<x<1, wherein the SiOx consists of a nanometric composite of crystalline SiO2 and amorphous Si. The method for preparing the powder comprises the steps of providing an aqueous solution comprising an anti-agglomeration agent, dispersing a silicon comprising organic compound in the aqueous solution, hydrothermally treating the aqueous solution at a temperature between 90 and 180°C for a period of 0.5 to 24h, preferably between 110 and 140°C for a period of 0.5 to 4h, thereby forming a suspension of SiO2 and Si in the aqueous solution, evaporating the solution, thereby obtaining a slurry, subjecting the slurry to a coking process whereby a solid residue is formed, calcining the solid residue at a temperature between 500 and 1300°C, preferably between 600 and 1000°C, in a non-oxidizing atmosphere.
IPC 8 full level
H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/485 (2010.01); H01M 4/587 (2010.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01)
CPC (source: CN EP US)
H01M 4/364 (2013.01 - CN EP US); H01M 4/386 (2013.01 - CN EP US); H01M 4/485 (2013.01 - CN EP US); H01M 4/587 (2013.01 - CN EP US); H01M 4/624 (2013.01 - CN EP US); H01M 10/052 (2013.01 - CN EP US); H01M 10/0525 (2013.01 - US); H01M 2004/027 (2013.01 - CN EP US); Y02E 60/10 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2014095823 A1 20140626; BR 112015014930 A2 20170711; CN 104937752 A 20150923; EP 2936587 A1 20151028; EP 2936587 B1 20170816; JP 2016506046 A 20160225; JP 6499083 B2 20190410; KR 101944153 B1 20190130; KR 20150099786 A 20150901; US 2015340687 A1 20151126; US 9601758 B2 20170321
DOCDB simple family (application)
EP 2013076851 W 20131217; BR 112015014930 A 20131217; CN 201380067462 A 20131217; EP 13805902 A 20131217; JP 2015548436 A 20131217; KR 20157019226 A 20131217; US 201314652950 A 20131217